docs: ✏️ fix some typos found in docs

[abrahamjsb]

PR Checklist

Please check if your PR fulfills the following requirements:

• [ x] The commit message follows our guidelines: https://github.com/scullyio/scully/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• [ x] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• [x ] Other... Please describe: fix some typos in documentation.

What is the current behavior?

Just some missing letters in some words in the docs.

Issue Number: N/A

What is the new behavior?

N/A

Does this PR introduce a breaking change?

• Yes
• [ x] No

Other information

[Villanuevand]

LGTM!